Defintely many ideas come to mind about this. I guess the whole thing comes down to me getting stuck inside a guy's ass- or a guy getting stuck in my ass. Both are MAJOR turnons for me.
Hell: I'd LOVE to try ballfucking too: I can imagine I could stick my balls into a guy and he can keep his ass squeezed tight and I'd be stuck inside him, and if he wanted to move around and walk, I'd have to follow him no matter where or what he wanted to do. That again is a MAJOR tunon for me
(if I ever found a guy that wanted to do that, I'd be set )